Measurement of the neutron spin structure function gn2 and asymmetry An2

K. Abe; T. Akagi; B. D. Anderson; P. L. Anthony; R. G. Arnold; T. Averett; H. R. Band; C. M. Berisso; P. Bogorad; H. Borel; P. E. Bosted; V. Breton; M. J. Buenerd; G. D. Cates; T. E. Chupp; S. Churchwell; K. P. Coulter; M. Daoudi; P. Decowski; R. Erickson; J. N. Fellbaum; H. Fonvieille; R. Gearhart; V. Ghazikhanian; K. A. Griffioen; R. S. Hicks; R. Holmes; E. W. Hughes; G. Igo; S. Incerti; J. R. Johnson; W. Kahl; M. Khayat; Yu G. Kolomensky; S. E. Kuhn; K. Kumar; M. Kuriki; R. Lombard-Nelsen; D. M. Manley; J. Marroncle; T. Maruyama; T. Marvin; W. Meyer; Z. E. Meziani; D. Miller; G. Mitchell; M. Olson; G. A. Peterson; G. G. Petratos; R. Pitthan; R. Prepost; P. Raines; B. A. Raue; D. Reyna; L. S. Rochester; S. E. Rock; M. V. Romalis; F. Sabatie; G. Shapiro; J. Shaw; T. B. Smith; L. Sorrell; P. A. Souder; F. Staley; S. St. Lorant; L. M. Stuart; F. Suekane; Z. M. Szalata; Y. Terrien; A. K. Thompson; T. Toole; X. Wang; J. W. Watson; R. C. Welsh; F. R. Wesselmann; T. Wright; C. C. Young; B. Youngman; H. Yuta; W. M. Zhang; P. Zyla

doi:10.1016/S0370-2693(97)00613-8

Measurement of the neutron spin structure function gⁿ₂ and asymmetry Aⁿ₂

K. Abe, T. Akagi, B. D. Anderson, P. L. Anthony, R. G. Arnold, T. Averett, H. R. Band, C. M. Berisso, P. Bogorad, H. Borel, P. E. Bosted, V. Breton, M. J. Buenerd, G. D. Cates, T. E. Chupp, S. Churchwell, K. P. Coulter, M. Daoudi, P. Decowski, R. EricksonJ. N. Fellbaum, H. Fonvieille, R. Gearhart, V. Ghazikhanian, K. A. Griffioen, R. S. Hicks, R. Holmes, E. W. Hughes, G. Igo, S. Incerti, J. R. Johnson, W. Kahl, M. Khayat, Yu G. Kolomensky, S. E. Kuhn, K. Kumar, M. Kuriki, R. Lombard-Nelsen, D. M. Manley, J. Marroncle, T. Maruyama, T. Marvin, W. Meyer, Z. E. Meziani, D. Miller, G. Mitchell, M. Olson, G. A. Peterson, G. G. Petratos, R. Pitthan, R. Prepost, P. Raines, B. A. Raue, D. Reyna, L. S. Rochester, S. E. Rock, M. V. Romalis, F. Sabatie, G. Shapiro, J. Shaw, T. B. Smith, L. Sorrell, P. A. Souder, F. Staley, S. St. Lorant, L. M. Stuart, F. Suekane, Z. M. Szalata, Y. Terrien, A. K. Thompson, T. Toole, X. Wang, J. W. Watson, R. C. Welsh, F. R. Wesselmann, T. Wright, C. C. Young, B. Youngman, H. Yuta, W. M. Zhang, P. Zyla

Department of Physics

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Abstract

We have measured the neutron structure function gⁿ₂ and the virtual photon-nucleon asymmetry Aⁿ₂ over the kinematic range 0.014 ≤ x ≤ 0.7 and 1.0 ≤ Q² ≤ 17.0 by scattering 48.3 GeV longitudinally polarized electrons from polarized ³He. Results for Aⁿ₂ are significantly smaller than the √R positivity limit over most of the measured range and data for gⁿ₂ are generally consistent with the twist-2 Wandzura-Wilczek prediction. Using our measured gⁿ₂ we obtain results for the twist-3 reduced matrix element dⁿ₂, and the integral ∫ gⁿ₂(x) dx in the range 0.014 ≤ x ≤ 1.0. Data from this experiment are combined with existing data for gⁿ₂ to obtain an average for dⁿ₂ and the integral ∫ gⁿ₂(x) dx.

Original language	English (US)
Pages (from-to)	377-382
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	404
Issue number	3-4
DOIs	https://doi.org/10.1016/S0370-2693(97)00613-8
State	Published - Jul 10 1997

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/S0370-2693(97)00613-8

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Abe, K., Akagi, T., Anderson, B. D., Anthony, P. L., Arnold, R. G., Averett, T., Band, H. R., Berisso, C. M., Bogorad, P., Borel, H., Bosted, P. E., Breton, V., Buenerd, M. J., Cates, G. D., Chupp, T. E., Churchwell, S., Coulter, K. P., Daoudi, M., Decowski, P., ... Zyla, P. (1997). Measurement of the neutron spin structure function gⁿ₂ and asymmetry Aⁿ₂. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 404(3-4), 377-382. https://doi.org/10.1016/S0370-2693(97)00613-8

Abe, K, Akagi, T, Anderson, BD, Anthony, PL, Arnold, RG, Averett, T, Band, HR, Berisso, CM, Bogorad, P, Borel, H, Bosted, PE, Breton, V, Buenerd, MJ, Cates, GD, Chupp, TE, Churchwell, S, Coulter, KP, Daoudi, M, Decowski, P, Erickson, R, Fellbaum, JN, Fonvieille, H, Gearhart, R, Ghazikhanian, V, Griffioen, KA, Hicks, RS, Holmes, R, Hughes, EW, Igo, G, Incerti, S, Johnson, JR, Kahl, W, Khayat, M, Kolomensky, YG, Kuhn, SE, Kumar, K, Kuriki, M, Lombard-Nelsen, R, Manley, DM, Marroncle, J, Maruyama, T, Marvin, T, Meyer, W, Meziani, ZE, Miller, D, Mitchell, G, Olson, M, Peterson, GA, Petratos, GG, Pitthan, R, Prepost, R, Raines, P, Raue, BA, Reyna, D, Rochester, LS, Rock, SE, Romalis, MV, Sabatie, F, Shapiro, G, Shaw, J, Smith, TB, Sorrell, L, Souder, PA, Staley, F, St. Lorant, S, Stuart, LM, Suekane, F, Szalata, ZM, Terrien, Y, Thompson, AK, Toole, T, Wang, X, Watson, JW, Welsh, RC, Wesselmann, FR, Wright, T, Young, CC, Youngman, B, Yuta, H, Zhang, WM & Zyla, P 1997, 'Measurement of the neutron spin structure function gⁿ₂ and asymmetry Aⁿ₂', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 404, no. 3-4, pp. 377-382. https://doi.org/10.1016/S0370-2693(97)00613-8

@article{926f81d8dc044068bc80c7fe71a0382b,

title = "Measurement of the neutron spin structure function gn2 and asymmetry An2",

abstract = "We have measured the neutron structure function gn2 and the virtual photon-nucleon asymmetry An2 over the kinematic range 0.014 ≤ x ≤ 0.7 and 1.0 ≤ Q2 ≤ 17.0 by scattering 48.3 GeV longitudinally polarized electrons from polarized 3He. Results for An2 are significantly smaller than the √R positivity limit over most of the measured range and data for gn2 are generally consistent with the twist-2 Wandzura-Wilczek prediction. Using our measured gn2 we obtain results for the twist-3 reduced matrix element dn2, and the integral ∫ gn2(x) dx in the range 0.014 ≤ x ≤ 1.0. Data from this experiment are combined with existing data for gn2 to obtain an average for dn2 and the integral ∫ gn2(x) dx.",

author = "K. Abe and T. Akagi and Anderson, {B. D.} and Anthony, {P. L.} and Arnold, {R. G.} and T. Averett and Band, {H. R.} and Berisso, {C. M.} and P. Bogorad and H. Borel and Bosted, {P. E.} and V. Breton and Buenerd, {M. J.} and Cates, {G. D.} and Chupp, {T. E.} and S. Churchwell and Coulter, {K. P.} and M. Daoudi and P. Decowski and R. Erickson and Fellbaum, {J. N.} and H. Fonvieille and R. Gearhart and V. Ghazikhanian and Griffioen, {K. A.} and Hicks, {R. S.} and R. Holmes and Hughes, {E. W.} and G. Igo and S. Incerti and Johnson, {J. R.} and W. Kahl and M. Khayat and Kolomensky, {Yu G.} and Kuhn, {S. E.} and K. Kumar and M. Kuriki and R. Lombard-Nelsen and Manley, {D. M.} and J. Marroncle and T. Maruyama and T. Marvin and W. Meyer and Meziani, {Z. E.} and D. Miller and G. Mitchell and M. Olson and Peterson, {G. A.} and Petratos, {G. G.} and R. Pitthan and R. Prepost and P. Raines and Raue, {B. A.} and D. Reyna and Rochester, {L. S.} and Rock, {S. E.} and Romalis, {M. V.} and F. Sabatie and G. Shapiro and J. Shaw and Smith, {T. B.} and L. Sorrell and Souder, {P. A.} and F. Staley and {St. Lorant}, S. and Stuart, {L. M.} and F. Suekane and Szalata, {Z. M.} and Y. Terrien and Thompson, {A. K.} and T. Toole and X. Wang and Watson, {J. W.} and Welsh, {R. C.} and Wesselmann, {F. R.} and T. Wright and Young, {C. C.} and B. Youngman and H. Yuta and Zhang, {W. M.} and P. Zyla",

note = "Funding Information: We wish to thank the personnel of the SLAC accelerator department for their efforts which resulted in the successful completion of the El 54 experiment, We would also like to thank J. Ralston for useful discussions and guidance. This work was supported by the Department of Energy; by the National Science Foundation; by the Kent State University Research Council (GGP); by the Jeffress Memorial Trust (KAG); by the Centre National de la Recherche Scientifique and the Commissariat a l'Energie Atomique (French groups); and by the Japanese Ministry of Education, Science and Culture (Tohoku).",

year = "1997",

month = jul,

day = "10",

doi = "10.1016/S0370-2693(97)00613-8",

language = "English (US)",

volume = "404",

pages = "377--382",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "3-4",

}

TY - JOUR

T1 - Measurement of the neutron spin structure function gn2 and asymmetry An2

AU - Abe, K.

AU - Akagi, T.

AU - Anderson, B. D.

AU - Anthony, P. L.

AU - Arnold, R. G.

AU - Averett, T.

AU - Band, H. R.

AU - Berisso, C. M.

AU - Bogorad, P.

AU - Borel, H.

AU - Bosted, P. E.

AU - Breton, V.

AU - Buenerd, M. J.

AU - Cates, G. D.

AU - Chupp, T. E.

AU - Churchwell, S.

AU - Coulter, K. P.

AU - Daoudi, M.

AU - Decowski, P.

AU - Erickson, R.

AU - Fellbaum, J. N.

AU - Fonvieille, H.

AU - Gearhart, R.

AU - Ghazikhanian, V.

AU - Griffioen, K. A.

AU - Hicks, R. S.

AU - Holmes, R.

AU - Hughes, E. W.

AU - Igo, G.

AU - Incerti, S.

AU - Johnson, J. R.

AU - Kahl, W.

AU - Khayat, M.

AU - Kolomensky, Yu G.

AU - Kuhn, S. E.

AU - Kumar, K.

AU - Kuriki, M.

AU - Lombard-Nelsen, R.

AU - Manley, D. M.

AU - Marroncle, J.

AU - Maruyama, T.

AU - Marvin, T.

AU - Meyer, W.

AU - Meziani, Z. E.

AU - Miller, D.

AU - Mitchell, G.

AU - Olson, M.

AU - Peterson, G. A.

AU - Petratos, G. G.

AU - Pitthan, R.

AU - Prepost, R.

AU - Raines, P.

AU - Raue, B. A.

AU - Reyna, D.

AU - Rochester, L. S.

AU - Rock, S. E.

AU - Romalis, M. V.

AU - Sabatie, F.

AU - Shapiro, G.

AU - Shaw, J.

AU - Smith, T. B.

AU - Sorrell, L.

AU - Souder, P. A.

AU - Staley, F.

AU - St. Lorant, S.

AU - Stuart, L. M.

AU - Suekane, F.

AU - Szalata, Z. M.

AU - Terrien, Y.

AU - Thompson, A. K.

AU - Toole, T.

AU - Wang, X.

AU - Watson, J. W.

AU - Welsh, R. C.

AU - Wesselmann, F. R.

AU - Wright, T.

AU - Young, C. C.

AU - Youngman, B.

AU - Yuta, H.

AU - Zhang, W. M.

AU - Zyla, P.

N1 - Funding Information: We wish to thank the personnel of the SLAC accelerator department for their efforts which resulted in the successful completion of the El 54 experiment, We would also like to thank J. Ralston for useful discussions and guidance. This work was supported by the Department of Energy; by the National Science Foundation; by the Kent State University Research Council (GGP); by the Jeffress Memorial Trust (KAG); by the Centre National de la Recherche Scientifique and the Commissariat a l'Energie Atomique (French groups); and by the Japanese Ministry of Education, Science and Culture (Tohoku).

PY - 1997/7/10

Y1 - 1997/7/10

N2 - We have measured the neutron structure function gn2 and the virtual photon-nucleon asymmetry An2 over the kinematic range 0.014 ≤ x ≤ 0.7 and 1.0 ≤ Q2 ≤ 17.0 by scattering 48.3 GeV longitudinally polarized electrons from polarized 3He. Results for An2 are significantly smaller than the √R positivity limit over most of the measured range and data for gn2 are generally consistent with the twist-2 Wandzura-Wilczek prediction. Using our measured gn2 we obtain results for the twist-3 reduced matrix element dn2, and the integral ∫ gn2(x) dx in the range 0.014 ≤ x ≤ 1.0. Data from this experiment are combined with existing data for gn2 to obtain an average for dn2 and the integral ∫ gn2(x) dx.

AB - We have measured the neutron structure function gn2 and the virtual photon-nucleon asymmetry An2 over the kinematic range 0.014 ≤ x ≤ 0.7 and 1.0 ≤ Q2 ≤ 17.0 by scattering 48.3 GeV longitudinally polarized electrons from polarized 3He. Results for An2 are significantly smaller than the √R positivity limit over most of the measured range and data for gn2 are generally consistent with the twist-2 Wandzura-Wilczek prediction. Using our measured gn2 we obtain results for the twist-3 reduced matrix element dn2, and the integral ∫ gn2(x) dx in the range 0.014 ≤ x ≤ 1.0. Data from this experiment are combined with existing data for gn2 to obtain an average for dn2 and the integral ∫ gn2(x) dx.

UR - http://www.scopus.com/inward/record.url?scp=0039968298&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0039968298&partnerID=8YFLogxK

U2 - 10.1016/S0370-2693(97)00613-8

DO - 10.1016/S0370-2693(97)00613-8

M3 - Article

AN - SCOPUS:0039968298

SN - 0370-2693

VL - 404

SP - 377

EP - 382

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 3-4

ER -

Measurement of the neutron spin structure function gⁿ₂ and asymmetry Aⁿ₂

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